c183200317
utility:
The tcpdrop command drops the TCP connection specified by the
local address laddr, port lport and the foreign address faddr,
port fport.
Obtained from: OpenBSD
Reviewed by: rwatson (locking), ru (man page), -current
MFC after: 1 month
65 lines
1.8 KiB
Groff
65 lines
1.8 KiB
Groff
.\" $OpenBSD: tcpdrop.8,v 1.5 2004/05/24 13:57:31 jmc Exp $
|
|
.\"
|
|
.\" Copyright (c) 2004 Markus Friedl <markus@openbsd.org>
|
|
.\"
|
|
.\" Permission to use, copy, modify, and distribute this software for any
|
|
.\" purpose with or without fee is hereby granted, provided that the above
|
|
.\" copyright notice and this permission notice appear in all copies.
|
|
.\"
|
|
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd March 21, 2004
|
|
.Dt TCPDROP 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm tcpdrop
|
|
.Nd drop a TCP connection
|
|
.Sh SYNOPSIS
|
|
.Nm tcpdrop
|
|
.Ar laddr
|
|
.Ar lport
|
|
.Ar faddr
|
|
.Ar fport
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
command drops the TCP connection specified by the local address
|
|
.Ar laddr ,
|
|
port
|
|
.Ar lport
|
|
and the foreign address
|
|
.Ar faddr ,
|
|
port
|
|
.Ar fport .
|
|
Addresses and ports can be specified by name or numeric value.
|
|
.Sh EXIT STATUS
|
|
.Ex -std
|
|
.Sh EXAMPLES
|
|
If a connection to
|
|
.Xr httpd 8
|
|
is causing congestion on a network link, one can drop the TCP session
|
|
in charge:
|
|
.Bd -literal -offset indent
|
|
# fstat | egrep 'httpd.*internet.*<--'
|
|
www httpd 21307 3* internet stream tcp \e
|
|
0xd1007ca8 192.168.5.41:80 <-- 192.168.5.1:26747
|
|
.Ed
|
|
.Pp
|
|
The following command will drop the connection:
|
|
.Bd -literal -offset indent
|
|
# tcpdrop 192.168.5.41 80 192.168.5.1 26747
|
|
.Ed
|
|
.Sh SEE ALSO
|
|
.Xr fstat 1 ,
|
|
.Xr netstat 1
|
|
.Sh AUTHORS
|
|
.An Markus Friedl Aq markus@openbsd.org
|